Chain saw.



W. PETERSON.

CHAIN SAW.

APPLICATION FILED APR.B.1916.

LWLWQO Patented June 26, 1917.

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GHQ mow WALTER PETERSON Elmvewboz V "n snares when.

warren rnrrnason, or. Hotter cnnnn, Iowa.

CHAIN saw.

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l Specifieation'ol! hetters Patent.

. Mamet Mae 2e, tear.

Application m a m e, 1916. serial no. tater.

- (To all it may concern:

- Be it lmovvn that .1, WALTER PETEREbN, a

' citizen of the "United States, residing at Honey- Creek, in the countyof Pottawattamie, in the State or Iowa, have invented .certain new anduseful Improvements in Chain Saws, and have described'the samein thefollowing specification, illustrated by the'accom'panymg drawings. a

My invention relates to that class of chain saws which varoused forcutting 'down trees and sawing'ofi 1o and which individually comprise ene'ss sprocket chain, provided with saw. teeth. It is the object of theinvention to simplify the construction and ihcrease'the eficiency ofsuch saws; to ada t the same to be operated, driven and I hel up totheirwork in a superior manner;

and in general to produce a superior saw ofjthef specified class. Toaccomplish this result I ncorporate in my improved cham saw'as teetharts" thereof, a' plurality; of saw are adapted to engage t e sprocketsof the 4 associated sprocket wheel immediately.

said drawings, illustrating the best manner in which I have contemplatedapplying the principles of the invention, F1g- 3'is a an. of a portionof the same saw, ose as in' Fig. 1 andseen fi'om h'elow. '4 isaperspective view of one are 1' is a side elevation of 'a portion of achain saw which is constructed in accord ance with these princi les, andaportlon ofa stationary guide on which it travels. .Fig. 2 averticalcross section of the saw/and the guide,-on the section line 2-2of Fig. i.

I [of the saw teeth. Fig.6 is an incomplete A s i n two spaced and:duplicate parallel side' plates, whiehgare-denoted by thesame nu- ,meralwith vasprocket,wheel, a porting frame.

side elevation of the same saw, associated fde and a sup-V lsa'lo"tudinal section of a log, art y cross-cut an having the chain saw, teguideand a wedge, in operative osition in thesaw kerf.

In the ustrated instance, my improved saw com rises a ,pluralityi'of the.double sheet V which are severally united and collectively- .2,duplicates-bf each other,

pivoted t9 the in terminally over-lapping $ybthe shafts 3. Each link has2 The saw further comprises af-pluralityof the cutting teeth, 4 and ofthe routeeek; 5ia lar ;atag;a mia, These whichare formed independentlyof the sprocket chain, are ivoted thereto, and 25 teeth have thetransversely perforated lugs 6 extending into the interior of the doublelmks 2,2lld are pivoted by these lugs on [theishaft's 3 respectively, insuch a mannerwio as to be operatively brought into terminally abuttingengagement with each other successively, as often as. they assume thenormal and rectilinear working position shown in Fig, 1. r'lhes'e lugsare. positioned andts adapted to admit and engage between them thesprockets of a driving sprocket wheel.

Being thicker than theltlgs, the teeth have I on their opposite sidesthe shoulders 7, which are adapted to contact with the adjating edges,or blades 8, spaced by the open 8o 10 tudinal-channel tl, and adapted towork in the opposite sides of the sawkerf 37 respectively; while each ofthe routing teeth 5 has a transverse cutting edge 10 directed forward.The guide 14, which is bolted to 35' the frame 11 carrying the sprocketwheel 16, has the straight and thin -margin 17 adapted by engagementwith the links 2, to guide the saw straight while hold- Y links 2, toguide the saw straight while holdto ing the 'sameunyieldingly forward toits work.

I claim as my invention 1. An endless chain saw of the specified class,comprising a plurality of side plates, as a plurality of shaftsconnecting the plates together in pairs and pivoting the pairs together.in terminally overlapping succession, and a plurality of saw teethhaving stop shoulders to engage the -plates,and havinglugs pivoted onthe shafts and adapted eniajlge the teeth-of asprocket wheel. 2.;endless chain saw of thespecified 'class, comprising a plurality of sideplates,

a plurality of shafts connectingthe plates togetherin pairsand: pivotingthe pairs together in terminally overlapplng succession, and a pluralityof saw teeth having lugs pivoted ,on the shafts between theplates andadhapilied to engage the teethof a sprocket 14W Ge r p v 3. Arr-endlesschain saw'ot the specified ed to admit between the plates a link-guideing bar, a plurality of shafts connecting the side plates in pairs, andpivoting the links together in series, and a plurality of saw teeth,pivoted on the shafts respectively.

5. Anendless chain saw of the specified class, comprising a plurality ofdouble links,

having side plates spaced apart to admit a guide between them, aplurality of shafts connecting the side plates in pairs and pivoting thelinks together in terminally overlapplng succession, and a plurality ofsaw .teeth pivoted on the shafts respectively, and

having stop shoulders adapted to engage by contact the edges of theplates.

6. An endless chain saw of the specified class, comprising a pluralityof double links having side plates, a plurahty' of shafts connecting theside plates and pivoting the links together in series, and a pluralityof normally abutting saw teeth pivoted on the shafts respectively, andadapted to engage the teeth of a sprocket wheel.

7. An endless chain saw of the specified class, comprising a pluralityof double links having side plates, a plurallty of shafts connecting theslde plates and pivoting the links together in series, and a pluralityof normally abutting saw teeth pivoted on the shafts respectively andhaving stop shoulders adapted to engage the plates.

8. An endless chain saw of the specified class, comprising a pluralityof double links having side plates spaced apart to'accommodate aninterposed guide, a plurality. of shafts connect-in the side plates inpairs and pivoting'the liu is together in series, and -a plurality ofnormally abuttin pivoted on the shafts respective y.

, 9. An endless chain saw of the specified saw teeth class, comprising aplurality of side plates spaced apart to accommodate an interme diateguide, a plurality of shafts connecting the plates together in pairs andpivoting the pairs together in series, and a plurality of normallyabutting saw teeth having stop shoulders to engage the plates.

Witness my signature at Omaha, Ne.-

braska, April 6, 1916.

WALTER PETERSON;

